BEGIN;
BEGIN
create or replace view revenue12 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-11-01'
		and l_shipdate < date'1994-11-01' + interval '90 days'
	group by
		l_suppkey;
CREATE VIEW
EXPLAIN (ANALYZE, BUFFERS)
select
	s_suppkey,
	s_name,
	s_address,
	s_phone,
	total_revenue
from
	supplier,
	revenue12
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue12
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2391815.09..2396912.55 rows=3733 width=79) (actual time=78957.022..78957.024 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue12.supplier_no)
   Buffers: shared hit=972964 read=365464 dirtied=204 written=170
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1187267.57..1187267.58 rows=1 width=8) (actual time=43770.186..43770.187 rows=1 loops=1)
           Buffers: shared hit=389764 read=278929 written=37
           ->  HashAggregate  (cost=1187183.58..1187220.91 rows=3733 width=12) (actual time=43689.905..43757.326 rows=100000 loops=1)
                 Buffers: shared hit=389764 read=278929 written=37
                 ->  Bitmap Heap Scan on lineitem  (cost=47876.05..1164438.97 rows=2274461 width=12) (actual time=3008.781..38739.361 rows=2246819 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-11-01'::date) AND (l_shipdate < '1995-01-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=389764 read=278929 written=37
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47307.44 rows=2274461 width=0) (actual time=2605.122..2605.122 rows=2280757 loops=1)
                             Index Cond: ((l_shipdate >= '1994-11-01'::date) AND (l_shipdate < '1995-01-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6136
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.103..32.878 rows=37989 loops=1)
         Buffers: shared hit=1040 read=1
   ->  Sort  (cost=1204547.51..1204556.84 rows=3733 width=12) (actual time=78918.268..78918.269 rows=1 loops=1)
         Sort Key: revenue12.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=971924 read=365463 dirtied=204 written=170
         ->  Subquery Scan on revenue12  (cost=1204242.04..1204326.03 rows=3733 width=12) (actual time=78889.668..78918.223 rows=1 loops=1)
               Buffers: shared hit=971924 read=365463 dirtied=204 written=170
               ->  HashAggregate  (cost=1204242.04..1204288.70 rows=3733 width=12) (actual time=78889.667..78918.220 rows=1 loops=1)
                     Filter: (sum((public.lineitem.l_extendedprice * (1::double precision - public.lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=971924 read=365463 dirtied=204 written=170
                     ->  Bitmap Heap Scan on lineitem  (cost=47876.05..1164438.97 rows=2274461 width=12) (actual time=2959.552..30504.543 rows=2246819 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-11-01'::date) AND (l_shipdate < '1995-01-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=582160 read=86534 dirtied=204 written=133
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47307.44 rows=2274461 width=0) (actual time=2579.346..2579.346 rows=2280757 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-11-01'::date) AND (l_shipdate < '1995-01-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=19 read=6119 written=100
 Total runtime: 78974.690 ms
(33 rows)

drop view revenue12;
DROP VIEW
COMMIT;
COMMIT